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Abstract

The wrapping bit for wire performs two consecutive wrapping operations, as when connecting both ends of a wire between two terminals, without reloading the bit after each wrapping operation.

Country

United States

Language

English (United States)

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Double Concentric Wrap Bit

The wrapping bit for wire performs two consecutive wrapping operations, as
when connecting both ends of a wire between two terminals, without reloading
the bit after each wrapping operation.

The bit consists of two concentric, cylindrical shells, each having an axially
extending groove in its outer surface. The shells are freely rotatable with respect
to each other and with respect to an outer sleeve into which they are inserted.
Drive devices (not shown) independently rotate the inner and outer shells.

In operation, a length of wire which is already selectively stripped at both
ends is inserted, endwise, into the grooves in both shells. The base of the
stripped wire at one end of the length of wire is exposed as shown in A. The
wrap tool, comprising the bit, is moved over a terminal pin. Then, the inner shell
is rotated with respect to the outer shell. This rotation causes wire to be wrapped
around the pin as shown in B.

After the wire is exhausted from the inner groove, the tool is moved to a
second terminal, while wire pays out from the outer groove. This continues until
the stripped wire at the opposite end of the wire length begins to emerge from the
outer groove (C). In a manner similar to the first wrapping operation, the outer
shell is now rotated, with respect to the inner one. This causes the wire to be
wrapped around the second terminal as shown in D.